|
|||||
|
|
Synthesis and characterisation of a nematic homo-polyurethane |
|
| Authors: | Domenico AciernoEugenio Amendola Cosimo CarfagnaSimona Concilio Pio Iannelli Loredana IncarnatoPaola Scarfato |
| Affiliation: | a Dipartimento di Ingegneria dei Materiali e della Produzione, Università di Napoli, P.le Tecchio, I-80125 Napoli, Italy b Istituto per la Tecnologia dei Materiali Compositi-CNR, P.le Tecchio, I-80125 Napoli, Italy c Dipartimento di Ingegneria Chimica ed Alimentare, Università di Salerno, via Ponte Don Melillo, I-84084 Fisciano (Salerno), Italy |
| Abstract: | The presence of hydrogen bonds in the chemical structure of polymers promotes and stabilises the crystalline phase. For liquid crystalline (LC) polymers, the side insertion of aliphatic units to the mesogenic unit is a suitable artifice to decrease the crystalline stability, without significantly affecting the stability of the LC phases. Here, we report on the synthesis of a LC homo-polyurethane with high hydrogen bond concentration along the chain and bearing an n-pentyl side-chain. Rheological behaviour, thermal analysis, and X-ray diffraction show that the stable LC phase is the nematic. |
| Keywords: | Polyurethane Nematic phase Rheology |
| 本文献已被 ScienceDirect 等数据库收录！ | |